[1] Childrens Hosp Philadelphia, Div Gen Pediat, Safe Place Ctr Child Protect & Hlth, Philadelphia, PA 19104 USA
[2] Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, 2716 South St, Philadelphia, PA 19146 USA
[3] Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA
[4] Childrens Hosp Philadelphia, Dept Radiol, Philadelphia, PA 19104 USA
[5] Univ Penn, Natl Clinician Scholars Program, Philadelphia, PA 19104 USA
[6] Univ Penn, Leonard Davis Inst Hlth Econ, Philadelphia, PA 19104 USA
[7] Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
[8] Univ Penn, Perelman Sch Med, Dept Radiol, Philadelphia, PA 19104 USA